Answer:
 .
.
Explanation:
The frequency  of a wave is equal to the number of wave cycles that go through a point on its path in unit time (where "unit time" is typically equal to one second.)
 of a wave is equal to the number of wave cycles that go through a point on its path in unit time (where "unit time" is typically equal to one second.) 
The wave in this question travels at a speed of  . In other words, the wave would have traveled
. In other words, the wave would have traveled  in each second. Consider a point on the path of this wave. If a peak was initially at that point, in one second that peak would be
 in each second. Consider a point on the path of this wave. If a peak was initially at that point, in one second that peak would be 
How many wave cycles can fit into that  ? The wavelength of this wave
? The wavelength of this wave gives the length of one wave cycle. Therefore:
 gives the length of one wave cycle. Therefore:
 .
.
That is: there are  wave cycles in
 wave cycles in  of this wave.
 of this wave.
On the other hand, Because that  of this wave goes through that point in each second, that
 of this wave goes through that point in each second, that  wave cycles will go through that point in the same amount of time. Hence, the frequency of this wave would be
 wave cycles will go through that point in the same amount of time. Hence, the frequency of this wave would be 
Because one wave cycle per second is equivalent to one Hertz, the frequency of this wave can be written as:
 .
.
The calculations above can be expressed with the formula:
 ,
, 
where 
 represents the speed of this wave, and represents the speed of this wave, and
 represents the wavelength of this wave. represents the wavelength of this wave.
 
        
             
        
        
        
Given Information:
KEa = 9520 eV
KEb = 7060 eV
Electric potential = Va = -55 V
Electric potential = Vb = +27 V
Required Information:
Charge of the particle = q = ?
Answer:
Charge of the particle = +4.8x10⁻¹⁸ C
Explanation:
From the law of conservation of energy, we have
ΔKE = -qΔV
KEb - KEa = -q(Vb - Va)
-q = KEb - KEa/Vb - Va
-q = 7060 - 9520/27 - (-55)
-q = 7060 - 9520/27 + 55
-q = -2460/82
minus sign cancels out
q = 2460/82
Convert eV into Joules by multiplying it with 1.60x10⁻¹⁹
q = 2460(1.60x10⁻¹⁹)/82
q = +4.8x10⁻¹⁸ C
 
        
             
        
        
        
Density I'm not sure
volume unchanged
mass unchanged
shape- water
        
             
        
        
        
The space in your chest cavity increases, so your lungs expand and are filled with air,
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Answer:
2. decreasing the distance of the space shuttle from Earth
Explanation:
To increase the gravitational force on a space shuttle, it is a good thing to decrease the distance of the space shuttle from the earth. 
This is based on the Newton's law of universal gravitation which states that "the gravitational force between two bodies is a directly proportional to the product of their masses and inversely proportional to the square of the distance between them". 
  Mathematically; 
            F  =  
  
G is the universal gravitation constant, it cannot be changed
m is the mass of the body
r is the distance 
   Since the distance is inversely proportional, is we reduce it, the value of the gravitational force will increase.